Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cf7642cefc17016…

MALICIOUS

PDF

71.4 KB Created: 2021-02-22 01:47:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 08e1cb5240588a7b0c778a5b092489f6 SHA-1: afbe09491cbe9d213d2c997e501879dc1d1db166 SHA-256: 1cf7642cefc170161a70a1fe364bd9e0797f839d86985b1785ed177bc9bf6ace
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://druttle.ru/wix?keyword=xhubs+apk+free+download+ios PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4480758/normal_602a82697752f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381321/normal_6029206ab6868.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417308/normal_600c445e97b44.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376858/normal_5fe129d1939ba.pdfIn PDF document text
    • http://hangookoil.ru/anandam_malayalam_movie_video_songs_free9bza8.pdfIn PDF document text
    • http://remontnatali.ru/esquema_oracion_simplepbkii.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454681/normal_600889bf62ea0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474992/normal_60249bee887b5.pdfIn PDF document text
    • http://dommasters.site/15858442629ixpui.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474759/normal_6006553ce63ba.pdfIn PDF document text
    • http://mini-camera-super.club/wehrmacht_translation_to_germanxzn13.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422893/normal_5fcf3ef96e880.pdfIn PDF document text
    • http://brumbum3.xyz/857185244884yk6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386839/normal_602c67a3e075c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376599/normal_5fdb649c13e9e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479222/normal_6009a4b58c227.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pulupalu.epizy.com/long_john_silvers_menu_danville_va.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB76 5400 bytes
SHA-256: 2ab5caebb1b4defdd65667fde46c4e57aa73655de270b708c97b77e7b00bb4c9
font_01_sfnt_off0000edd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD5 10184 bytes
SHA-256: cd07fa74fbca3e8115d9990bbcd7566a8066c3a8b287706a5d1bf04be3ce27e4